Compilare: main.cpp: In function 'int main()': main.cpp:27:31: warning: format '%u' expects argument of type 'unsigned int*', but argument 3 has type 'long long unsigned int*' [-Wformat=] fscanf(fi,"%u", &k); ^ main.cpp:23:13: warning: unused variable 'u' [-Wunused-variable] int u = n, v = n; ^ main.cpp:23:20: warning: unused variable 'v' [-Wunused-variable] int u = n, v = n; ^ main.cpp:24:13: warning: unused variable 'p' [-Wunused-variable] int p = 1, q = n + 1; ^ main.cpp:24:20: warning: unused variable 'q' [-Wunused-variable] int p = 1, q = n + 1; ^ main.cpp:10:14: warning: variable 'fo' set but not used [-Wunused-but-set-variable] FILE*fi,*fo; ^~ main.cpp:27:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%u", &k); ^ main.cpp:45:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &x[i]); ^